Automatic mixing device



Dec. 5. 1933. D. R. MURRAY AUTOMATIC MIXING DEVIGE Filed Jan. 3. 1935 Ba/ww ATTORNEYS Patented Dec. 5, 1933 l unirsi) sT-QT-,Es l

Parent jessica- 1,937,582 j .wfroiim'rio' MIXING DEVICE Daniel R. Murray, Cleveland, ohio' A Application January s, 1933.l v'sei-iai Nofciasso L v t 12 claims. (Cl. V29o-fin) v This invention relates to automatic -mixing devices, and more particularlyto devices for mixing and proportioning 'liquids forming admixtures with water such as arev used in connecl5 tion with syringes and the like.'

The conventional wayof mixingv antiseptic or medicinal chemicals ywith Water, in use in the home, is to provide a measured quantity of water in a container, such as a rubber hotwater bot# tle and the like, andthen a measured'quantity. of such admixture isV added to the water. The resulting admixture is then placed in such a rposition, with reference to the .point of dischargey thattthe admixture Will now by gravity throughv a flexible rubber hose to a syringeor the like.Y

In this type of device it is necessary to add a measured amount of antisepticr solution, or chemicals, each time the container is 'lled and there Yis no meansby which thernixing may be accomplished as a continuous process.'Y J f 'Y i Y I have discovered that a continuously operating automatic mixing device may be provided, which, in operation, requires only the lling of a solution or chemical reservoir, the setting of an adjusting meansan'd the continuous mixing operation is started by turning' on asupply of water under pressure to .which ythe device" is fastened. The mixing operation, supplying predetermined proportions, continues as long as the Water continues to flow and there is supply of the solution or chemicals in the reservoir.

wIt,.therefore,'is an object of this invention to provide an automatic means for mixing a liquid with water supplied under pressure in such a manner, that proportions of water and the liquid mixedA therewith may be' determined in advance of the jmixing operation, and suchproportions will remain constant regardless of the volume of Water or pressure thereof supplied to the device. Anotherv object is'to provide a 'devicefto ac complish the above objects, which is small, compact and easily attachable to a source .of-water under pressure, and which is simple of operation and construction and may be quickly and easily adjusted. Another object is to provide an automatic mixing device in which the mixed liquids lwill be under pressure, so that the admixture'may be conducted a considerable distance from the-mixing device, for use in various sanitary and me dicinalapplications. This, feature permits the mixture tobe given a swirling motion, lwhich is considered a very valuable feature in many uses. Still another object is to provide a device .of

the nature described, which operates entirelymoved, while a gasket,l7-A','cn the top 'of the 'mixing reservoirlL'permits the top plate 17. to betightlysecured thereto.;v VA clipv A'19`ris pro# Avided on the exible tube 15 for the purposeof indeilnendentlyA of gravity, so 'that various applicators connected to tubing leading frornthemix-Y ing device may be used in any'desired 'positionya uniform pressure being suppliedat'any position,

- The above .and other objects of this Vinvention 69:

are accomplished in an illustrative'embodiinent of the invention, as "disclosedin the accompany ing drawing,'inwhicl'irr i -v Y Fig.' 1 is a central vertical section Vthrough the centerjof a mixing device',vwhile Y Flai. The embodimentV of the invention, herein shown, is especially adapted'ffor use in 'connece' tion with a syringe'oran irrigator, in'which the 70;

application of -the vmixed lliquids takes place' at a point some distance from the tap supplying water under pressure; In the drawing. 11' represents a cylindrical i .glass mixing reservoir, ywhile waterg'under pres- 7.5.5

Ytends into the .reservoir for, some distance,v as

shown in Fig. 1. The topf-plate l'lis provided with a downwardly extending ange 18,v having 85,2

' threads mating'with similar threads formed on the top yof the sidesof the "reservoir `1 1,`so thatl the top plate is screwthreadedly mounted thereonpermitting it to be quickly attached andreclamping together the'sides, as shown in' the dotel ted lines in Fig. 1, to `shutoff the waterl from'the v rmixing *reservoir `11.` A spring-pressed relief valve 20, normallyclosed, is provided ontheside of the head 13, and opens whenapredetermined pressure is reached inthe flexible tubing 15,'1to prevent the breaking of the tubing by the excessive pressurelof the water! l5 j 1 ,f cylindrically shaped solution reservoir 21,A having 'a bottom wall 22, dependsV from the bottom oftheftop plate 1'7 and receives a lling tube 23 having al hexagonal cap l24:;screw'threadedly mounted at the top thereof. A hollowboss25v, extending downwardly from the'bottom of the top plate 17 is provided internally with'screw threads cooperating' with screw threads on the top of a valve stem'26 having a flat dis'c127, pere 6,52" Fig. 2 is a section taken on the line'Z-Z ci mitting the valve stem to beeasily turned in the4 bess 25. The screw threads ,on the top oi the valve stem 26 and the cooperating threads on the internally threaded boss 25 are preferablyl 'made so that no air can enter the solution reservoirY 21 therethrough. A 'small aperture 30 constituting a vent for the admission of air into the tcp of the solution reservoir 2l' permits liquid `contained therein to ilow out. 'The lower end of the valve stem 26 is provided with a conical valve head 28, which seats in a ported valve seat 29, formed at the top of a channel 31 in a boss 32 extending downwardly from the bottom wall 22 of the solution'reservoir 21, the bottom of the i 4channel 31 is tapered voutwardly at 33' for a purzontally extending and a vertically extending part, as shown in Fig. 1. i A coil spring3'6, secured to the side of the solution reservoir. and to the horizontally extending part oi lever 34, normally sustains the lever 34 inthe closed position shown in the full lines in Fig. 1. Y The upper end of the vertically positioned part of the lever 34 is provided with a head 37 adapted toiit against the lower end of the tube 16 conducting'water under pressure into the top of the mixing reservoirll, while the'horizontally extending part of the lever 34'is provided with a somewhat conical shaped head 38 adapted to seat in the outwardly tapered part 33 of 'thechannel 31 in the boss32 for controlling the ilow of liquid therefrom.

A discharge tube 39 is suitably 'secured to the bottom wall of the mixing reservoir 11, while a exible rubber tube 40 is mounted over the lower end of the discharge tube 39. 'It has been found that thebest'results are obtained by having the inlet tube 16 about one-half the diameter of the dischargetube 39, t'o assure the proper pressure and to keep the mixture at a proper level within the 'mixing reservoir 11. The mixing device shown is intended to be used to supply a mixture of water with some other liquid which is to be used in connection with a syringe, or .the like,.for various purposes. The syringe or other injecting device may be suitably secured to the lower end of the flexible tube-40 and may be at a considerable distance from the mixing device.'

The mixing device herein shownis not to be Vconsidered as being limited to the usementioned,l

as it has been found that it may-be conveniently usedin many commercial processes, such as mixing various chemicals, paints and the like; `In

certain instances, when certain heavy liquids areV used, additional pressure'may be required to as-` sure a proper now of the liquids.` In such cases compressed airmay' be used and isV admitted-at the top'of the mixing reservoir 11. Y

VThe operation of the device, inconnection with a syringe or other injector means, is as follows. The hexagonal cap 24 is first unscrewed from the filling tube 23 andthe admixture or( solution to be mixed with the water-is poured therein, and the cap 24 is screwed' down. rIihen the disc 27 on the valve stem 26 is adjusted to lower or raise the valve head 28 to permit the proper flow of liquid therefrom, in predetermined proportions with the Water. The head 13 is then placed over the end of a Water' faucet and the clip 19 is closed, as

shown in the dotted lines in Fig, 1, and the water,y

in the faucet l2 may be turned on. `It is contemplated that theiiexible tube 15 may be several feet long so that the user is not required to kuse the mixture in the'proximity of the faucet. The pressure inthe tube 15 will force the spring pressed relief valve open to relieve the pressure therein and permit the water to flow out through the valve l20 until the user is ready to actually use the syringeror injector. i

When .the user is readyv to use the syringe or injector, at a distance from the faucet, the clip 19 is opened, thus permitting water, under pressure, to flow into .the inlet tube 16. The water, as it flows out of the lower end or the` inlet tube, will strike against'the head 37 on ther top of the vertically extending part ofthe lever 34, and will Vcausev therlever 34'to swing downwardly on its pivotal mounting 35, to assume a position shown bythe dotted linesin Fig. 1. Thus, the conical head 38, on the horizontal part of the lever 34, is moved downwardly, thereby opening the chan- Y nel y31 permitting the liquid'to flow therethrough into the mixing reservoir 11, at arategoverned by the position or" valve stem r26. As soon asthe flow of water in the inlet tube 16 is cutoff, either by shutting off the aucet12, or bythe squeezing together of vthe lsides of the flexible tube 15 by the clip 19, the coil springy 36 will'return the lever 34vto itsnormal positionshown in full lines in Fig. 1, thus preventing any further now of the liquidk from the solution reservoirl 21'.. When .the clip 19 is closed, while the `water in the faucet Al2 is still turned on, the relief valve 20 will'be forced open by the built up pressure, thus permitting the water to ilow therethrough and prevent the bursting of the tube 15.

lIt has been found that best results are secured by adjustingthe parts, so that the top of the adclosed mixing reservoir, a solutionres'ervoir with'- in thek mixing reservoir having an Yaperture inV communication with the mixing reservoir, ilexible conduit Ymeans secured to the mixing reservoir at one' end and adapted at the voth'erend to be fitted over a plug supplying liquid under pressure to the mixing reservoir, means for shutting oil vthe flo'wof liquid in/said conduit, `conduit means for conducting mixedliquid away from the mixing reservoin'and means controlled by `the flow of'liquid 'into the mixing reservoir'for opening and closing said aperture in the solution reservoir.

2. An `automatic mixingdevice comprisingv a` by the flow of liquid into the mixing reservoir for.

' in the mixing reservoir having an aperture in 1,987,582l v c ,opening and closing said aperture in the solution reservoir. i I

3. An' automatic mixing device comprisinga closed `mixing reservoir, a solution reservoir Within the-mixing reservoir` having an aperturein communication with vthe mixing reservoir, flexible conduit means secured to the mixing reservoir at one end and adapted at the other end to be fitted over a plug supplying liquid under pressure to the mixing reservoir, means for shutting off the flow of liquid in said conduit, conduit means for vconducting mixed liquid away from the mixing reservoir, and means controlled by thel flow of liquid into the mixing reservoir for opening and closing said aperture in the Ysolution reservoir, said control means normally closing said aperture but movable away from said aperture by the flow of liquid'into the mixing reservoir to permit liquid to ovv from the solution reservoirl to the mixing reservoir.

4. An automatic mixing device comprising a closed mixing reservoir, a solution reservoir Withv in the mixing reservoir having an aperture in communication with the mixing reservoir, flexible conduit means secured to the mixing reservoir at one end and adapted at the other end to be iitted over a plug supplying liquid underV pressure tok the mixing resevoir, means for shutting off the iiovv of liquid in said conduit, conduit means for conducting mixed liquid away from the mixing reservoir, a lever having a free end in line with the flow of liquid under ypressure and normally resting against the end ofthe supply conduit, but movable therefrom by the iloW V.of

liquid from said conduit, and closure meansr mounted on said lever controlling the lilovv of liquid through the aperture in the solution reser- Voir.

5. An automatic mixing device comprising a closed mixing reservoir, a solution reservoir Withcommunication with the mixing reservoir, flexible conduit means secured to the mixing reservoir at one end and adapted at the other end'to be fitted over a plug supplying liquid under pressure to the mixing reservoir, means for shutting oi` the flow of liquid in said conduit, conduit means for conducting mixed liquid away'from the mixing reservoir, a lever having a free end in line with the flow of liquid under pressure and normally resting against the end of the supply conduit, but movable therefrom by the flow of liquid from said conduit, means for returning said lever to its normal position when Athe iiovv of liquid is out oir, and closure means mounted on said lever controlling the flow of liquid through the aperture in the solution reservoir.

6. An automatic mixing device comprising a closed mixing reservoir, a solution reservoir Within the mixing reservoir having an aperture in communication with the mixing reservoir, valve means operable from the outside of the mixing reservoir for regulating the flow of liquid out of the aperture into the mixing reservoir, aiiexible conduit means'secured to the mixing reservoir at one end and adapted at the other end to vbe fitted over a plug supplying liquid under presthemixingfreservoir for regulating the iioW of liqlthe flow of liquid from' the aperture in' the solu- '150 closed mixing reservoir, a solution-'reservoir withinv the-mixing reservoir havingan yaperture vin communication with the mixingreservoirand a vent, valve means operable Lfrolnthe` outside of uid outfof theaperturefinto the mixing reservoir, at flexible conduit '.meanssecured to the mixing reservoir at one end and adapted at the other vend to "be fitted over a ,plugy supplying .liquid under pressure tothe mixingreservoir, means forlshut'- ting ofl'the iiow of liquid'in said conduit, Yconduit means for conducting mixed liquid away fromfthe mixing reservoin,l and means controlled by. the flow of liquid intothe mixing reservoir for opening and" closing said aperture in thesolution reservoir. 1" f 8. An automatic mixing devi'ce comprising a closedmixing reservoir, a solution reservoir Withy in theY mixing reservoir having an aperturein communication with the mixing reservoir, flexible conduit means secured to the mixing reservoir at` one enld-andadapted at the other end to beA fitte'd over a plug supplying liquid under pressure to ture but movable away'from the aperture by the i oW of liquid into the mixing reservoir to permit y liquid tofiiow from the'soluton reservoir to the mixing reservoir. l

`9. AnY automatic mixing device 'comprising a.

closed mixing reservoir, a solution reservoir Within the mixing reservoir having an aperture in communication with the mixing reservo-ir, flexible ,conduit means secured to themixing reservoir at one end and adapted -Vat theother endto be f1tted over a plug supplying liquid under pressure to the mixing reservoir, means forshuttingI off they vovv of liquid in said conduit, a lrelief valve between said shut off means and said plug, conduit1-2l,vH

means-for conductingmixed liquid away fron'r the mixing reservoinla lever having a .freeend inline with the flow of Vliquid under pressure `and normally resting against theend of thev conduit supplying' liquid under pressure butrk kmovable therefrom by the ow vof liquid from` 4thefsaid conduit, and closure means mounted on said lever controlling the flow of Iliquid from the aperture in the solution reservoir.

10. An automatic mixing device comprising a closed mixing reservoir, a solution reservoir within the mixing reservoir having an aperture in communication with the mixingreservoir, flexible con-- duit means securedv to the mixing reservoir at one end an-d adapted at the other end to be fitted over a plug supplying liquid under' pressure vto the mixing reservoir, .meansfor shutting oifA the flow of liquid in said conduit, a relief valve between said shut oi` means and Asaid plug, conduit means for conducting mixed liquid'away from the mix-v 1,40 ing reservoir, a lever-having a free endin line iwith the oW of liquid under pressure and nor-v mally resting against the end of the conduit'suplplying liquid under pressure but movable there- I from by the" now of liquid from the saideonduit, '145 means for returningvsaid lever to its normal position when the kow of liquid is cut' oli-and'- closure means mounted on said lever ycontrolling tion reservoir. f

11. An automatic mixingfdevice comprising av v,closed mixing reservoir, a solution reservoir with- `in the mixing reservoir-having an apertureA in communication with the mixing reservoir, valve kmeans and said plug, conduit means for Vconducting mixed liquid away from the mixingreservoir, and means controlled by the flow of liquid into the mixing reservoir for opening and closing said aperture inthe solution reservoir. n

c 12. An automatic mixing device comprising a closed mixing reservoir, a solution reservoir withinthe mixing reservoir having an aperture in communication with the mixing reservoir and a vent, Valve means operable from the outside of the mixing reservoir for regulating the flow of liquid out of sai-d aperture into` the mixing reservoir,

a flexible conduit means secured to the mixing reservoir at one end and adapted to be tted over a plug supplying liquid under pressure tothe mixing reservoir, means for shutting oi the flow ofv liquid in said conduit, a relief Valve between said shut off means and s'aid plug, conduit means for conducting mixed liquid away fromthe mixing reservoir, and means controlled by the flow i of liquid into the vmixing reservoir for opening and closing said aperture in the solution resers voir. y f N t DANIEL R. MURRAY. 

